[TowerTalk] Protecting ferrites?

[DJ7WW]

My chokes are wound through 4.5" toroids #61 mix.
My cable is 1/2" ultraflexible Cellflex.
I do not use any wheather shielding either, so far no problem.
The oldest choke is now for 4 years exposed to the elements.

73
Peter, DJ7WW


-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com] On Behalf Of K8RI on TT
Sent: Dienstag, 30. August 2011 06:07
To: towertalk at contesting.com
Subject: Re: [TowerTalk] Protecting ferrites?

On 8/29/2011 11:32 PM, Jim Miller wrote:
> I'm putting a string of 31 mix ferrites on some Buryflex at my feedpoint.
> What's the recommendation for wx shielding?

Coiling the coax through the cores is more effective than a string of beads.
I use (depending on frequency) 5 or 6 turns of Davis BuryFlex through 5 
or 6,  2.4" #31 mix cores at the feed point of my 160, 75 and 40 meter 
antennas.  The cores are left exposed to the elements.  Is that a good 
idea?  Ask again in a couple years. The 40 meter current balun has been 
up a bit over a year while the 75 meter one has been up for just a few 
months.  I have to work on the 160 half sloper and may replace that with 
a remote tuner.

  73

Roger (K8RI)
>
> I was concerned that ice might find it's way to crack them.
>
> I was thinking of wrapping them with the rubbery 3m tape stuff followed by
> 3M 33 tape much like connector sealing.
>
> Good, bad, unnecessary, insufficient?
>
> Recommendations desired.
>
> Thanks
>
> Jim ab3cv
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